What is difference between HTTP and HTTPS Interview Question | HTTP vs HTTPS difference | Is HTTP Secure | How HTTPS works | What is HTTP Protocol | HTTP vs HTTPS Security
The KeyCDN team always encourages people to enter HTTPS for a variety of reasons, such as performance gains, additional security, and even SEO benefits. We are constantly releasing as well as HTTP and HTTPS and sometimes we understand their origins in how they work and there is some history behind them. So today we thought that we would understand the difference between HTTP and HTTPS more deeply, what they would mean and why it might be time for you to get into HTTPS.
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| HTTP vs HTTPS |
What is HTTP?
HTTP stands for Hypertext Transfer Protocol. When you enter http: // in the address bar in front of the domain, you tell the browser to connect via HTTP. HTTP generally uses port 80 plus TCP (Transmission Control Protocol) to send and receive data packets over the web. Simply put, it is a protocol used by clients and servers that allows you to communicate with other websites. The client sends a request message to an HTTP server (after TCP handshake) hosting a website, then the server responds with a response message. The response message contains complete status information, such as HTTP / 1.1 200 OK.
TCP has increased over the years, but for the most part it remains the same as was first defined in 1974, RFC 675. HTTP also uses UDP (User Datagram Protocol), designed in 1980 by David Reid, defined in the RFC. 768. Less reliable but widely used in video conferencing, video games, and broadcasting. This allows different packages to be received and received in different order for better performance.
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| HTTP not secure |
The term hypertext originally came from Ted Nelson in 1965. The original HTTP was originally developed and proposed by Tim Berners-Lee, director of the World Wide Web Consortium (W3C). W3C's mission is to bring the Web to its fullest potential by developing protocols and guidelines that ensure the long-term development of the Web.
There was a time when people thought that the Internet is another world, but now people realize that it is a tool that we use in this world.
- Tim Berners-Lee
The first HTTP documentation was published in 1991 as HTTP / 0.9, which included only one HTTP request method, GET (request for data from a specific resource). In 1996, HTTP 1.0, RFC 1945, was developed and included three HTTP request methods, GET, HEAD, and POST (send data to be processed on a specific resource). Finally, in 1997, the HTTP / 1.1 protocol, RFC 2068, was developed as a modification of HTTP 1.0 and is still used for all HTTP requests even after 19 years.
There have been some minor modifications to HTTP / 1.1 over the years. In 1999, RFC 2616 introduced five new modes, Options, PUT, TRACE, CONNECT, and DELETE. And then in March 2010, RFC 5789 introduced the PATCH method. As of today, the current version defines nine different request methods.
The connection was closed after a single request on HTTP / 0.9 and 1.0. Continuous connections (multiple requests / responses over the same HTTP connection) were introduced in HTTP / 1.1, which dramatically reduced latency. Other enhancements were also added, such as caching, improved compression support, and resource sharing between originals (kernel).
If there is a problem with the HTTP request, there is a list of status codes that inform your browser so it can better troubleshoot what the problem might be. How a user agent handles a response depends on the response header field and code. For example, a 404 Not Found error means that the content does not exist or has not been moved. Another common example is a 502 bad gateway error which can mean that the domain name does not resolve to the correct IP or does not resolve to no IP.
What is HTTPS ?
HTTPS stands for Hypertext Transfer Protocol Secure (also known as HTTP over TLS or HTTP over SSL). When you put https: // in your address bar in front of the domain, it tells the browser to connect to HTTPS. Generally, sites that run more than HTTPS have a redirect, even if you type http: // it will be redirected to provide a secure connection. HTTPS also uses TCP (Transmission Control Protocol) to send and receive data packets, but it does so on port 443 within a connection encrypted by Transport Layer Security (TLS).
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| What is difference between HTTP and HTTPS |
As of April 2016, 41.7% of the 141,160 most popular websites on the Internet have a secure HTTPS implementation.
- SSL Pulse
Do you remember Netscape? Well, HTTPS was created by Netscape Communications in 1994 for use in their Netscape Navigator web browser. HTTPS originally used the SSL protocol which eventually evolved to TLS, the current version defined in RFC 2818 in May 2000. This is why you can listen to the terms of SSL and TLS quite flexibly.
HTTPS transmits the security of your data over an encrypted connection. Basically it uses a public key which is then decrypted on behalf of the recipient. The public key is implemented on the server and includes what is known as an SSL certificate. Certificates are cryptographically signed by a certificate authority (CA), and each browser has a list of CAs it trusts reliably. Any CA-signed certificate on the trust list receives a green lock in the browser's address bar, as it proves to be "trusted" and belongs to that domain. Companies like Let's Encrypt have now made the SSL certificate issuance process free.
HTTPS vs SSL | HTTP vs HTTPS Seo
According to a GlobalSign survey, 84% of shoppers abandon a purchase if data is sent to an insecure address and 28.9% search for the green address bar. Never enter your credit card details on websites that run on HTTP. The main purpose of using HTTPS is for security and privacy reasons. When the data is encrypted, it means nothing happens in plain text. Many people may wonder if they should bother with HTTPS on smaller sites like blogs, but remember that your login page needs to be encrypted as well.
SPDY
SPDY (pronounced SPeeDY) is a network protocol created by Google with the goal of making the web faster. It was originally announced in 2009. SPDY requires the use of SSL / TLS (with the TLS ALPN extension) for security, but it also supports operation over simple TCP.
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| What is difference between HTTP and HTTPS |
The top three benefits were:
Allows clients and servers to compress request and response headers, reducing bandwidth usage when similar headers (eg X-Cache) are sent repeatedly for multiple requests.
It allows multiple requests over a single connection and therefore saves on round trips between the client and the server. Also, prevent low-priority assets from reducing high-priority requests.
It allows the server to actively send the client to the client that it knows the client will need (such as CSS and images) without having to wait for the request.
See the difference between HTTP / 1.1 and SPDY 3.1. However, on February 11, 2016, Google announced that Chrome would no longer support SPDY in favor of HTTP / 2.
HTTP / 2
HTTP / 2 is a protocol upgrade to HTTP / 1.1 and is based on SPDY. It was developed by the IETF HTTP Working Group published in May 2015 and defined in RFC 7540. Due to browser support for HTTP / 2, HTTPS currently needs to take advantage of this. Read about the difference between SPDY3.1 and HTTP / 2.
As of April 2016, 7.3% of the top 10 million websites are HTTP / 2 compliant.
- W3Techs
Here are some of the benefits of HTTP / 2:
HTTP / 2 is binary instead of text.
It is completely a multiplex instead of ordering and blocking.
Increasing speed reduces overtime round trip (RTT), allowing your website to load faster without any customization.
You can use a connection for parity.
Uses Huffman-encoded HPACK compression to reduce headers.
This allows servers to "send" responses to the client's cache instead of waiting for a new request for each resource.
The new ALPN extension enables fast encrypted connections as the application protocol is determined during initialization.
With HTTP / 2 there is no longer the need for domain fragmentation and asset configuration.
Addresses the core of the line blocking problem in HTTP / 1.1.
More and more big brands and sites are moving to HTTP / 2 this week, like Wikipedia. If your current server or CDN provider supports HTTP / 2, you can use KeyCDN's HTTP / 2 testing tool to test it.
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| How HTTPS works ? |
- As of this morning, https://t.co/Bv0erJiH66 supports HTTP / 2. Tested by https://t.co/mykDE06rEv # http2 #webperf
- Wikipedia (@Wikipedia) May 4, 2016
KeyCDN has supported HTTP / 2 on all of its Edge servers since October 2015.
What is the difference between HTTP and HTTPS?
Here are some of the main differences between the HTTP and HTTPS protocols, in no particular order.
Difference between HTTP and HTTPS {Here isn’t difference between HTTP and HTTPS in Tabular Form but enlisted Below} :-
The HTTP bar in your browser's address bar is http: // and the HTTPS URL is https: //.
HTTP is insecure while HTTPS is secure.
HTTP sends data through port 80, while HTTPS uses port 443.
HTTPS operates at the transport layer, while HTTPS operates at the application layer.
No SSL certificate is required for HTTP, with HTTPS it is required that you have an SSL certificate and be signed by the CA.
HTTP does not require domain verification, where HTTPS requires at least domain verification and some certificates also require legal document verification.
There is no encryption in HTTP, the data is encrypted before it is sent with HTTPS.
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| Encrypted Https |
Summary
We recommend that you consider switching to HTTPS. The TLS negotiation and CPU overhead are now very negligible and in many tests we have seen performance improvements when people make the switch from HTTP to HTTPS, as long as they run over HTTP / 2. Also be sure to check out our HTTP migration guide for HTTPS. And don't forget that you can deploy KeyCDN assets over HTTPS, even if you don't have time to move your native server.
So Guys, This is an article where HTTP and HTTPS are fully explained. And also explained about HTTP vs HTTPS performance
Also Read Our Previous Post " What is OTP Code ? "
Our Upcoming Post will be on " What is FTP Server ? "
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